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lcdprocclient.cpp
2443 lines (2035 loc) · 66.8 KB
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lcdprocclient.cpp
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/*
lcdprocclient.cpp
a MythTV project object to control an
LCDproc server
(c) 2002, 2003 Thor Sigvaldason, Dan Morphis and Isaac Richards
*/
// c/c++
#include <unistd.h>
#include <stdlib.h>
#include <cmath>
//qt
#include <QCoreApplication>
#include <QEvent>
#include <QTimer>
// mythtv
#include "mythcontext.h"
#include "mythdbcon.h"
#include "tv.h"
#include "compat.h"
//mythlcdserver
#include "lcdprocclient.h"
#include "lcdserver.h"
#include "lcddevice.h"
#define LCD_START_COL 3
#define LCD_VERSION_4 1
#define LCD_VERSION_5 2
#define LCD_RECSTATUS_TIME 10000
#define LCD_TIME_TIME 5000
#define LCD_SCROLLLIST_TIME 2000
int lcdStartCol = LCD_START_COL;
LCDProcClient::LCDProcClient(LCDServer *lparent) : QObject(NULL)
{
// Constructor for LCDProcClient
//
// Note that this does *not* include opening the socket and initiating
// communications with the LDCd daemon.
if (debug_level > 0)
VERBOSE(VB_GENERAL, "LCDProcClient: An LCDProcClient object now exists");
socket = new QTcpSocket(this);
connect(socket, SIGNAL(error(QAbstractSocket::SocketError)),
this, SLOT(veryBadThings(QAbstractSocket::SocketError)));
connect(socket, SIGNAL(readyRead()), this, SLOT(serverSendingData()));
m_parent = lparent;
lcd_ready = false;
lcdWidth = 5;
lcdHeight = 1;
cellWidth = 1;
cellHeight = 1;
lcdStartCol = LCD_START_COL;
if (lcdWidth < 12)
{
if (lcdHeight == 1)
lcdStartCol = 0;
else
lcdStartCol = 1;
}
hostname = "";
port = 13666;
timeFlash = false;
scrollingText = "";
progress = 0.0;
generic_progress = 0.0;
volume_level = 0.0;
connected = false;
send_buffer = "";
lcdMenuItems = new QList<LCDMenuItem>;
lcdTextItems = new QList<LCDTextItem>;
timeTimer = new QTimer(this);
connect(timeTimer, SIGNAL(timeout()), this, SLOT(outputTime()));
scrollWTimer = new QTimer(this);
connect(scrollWTimer, SIGNAL(timeout()), this, SLOT(scrollWidgets()));
preScrollWTimer = new QTimer(this);
preScrollWTimer->setSingleShot(true);
connect(preScrollWTimer, SIGNAL(timeout()), this,
SLOT(beginScrollingWidgets()));
popMenuTimer = new QTimer(this);
popMenuTimer->setSingleShot(true);
connect(popMenuTimer, SIGNAL(timeout()), this, SLOT(unPopMenu()));
menuScrollTimer = new QTimer(this);
connect(menuScrollTimer, SIGNAL(timeout()), this, SLOT(scrollMenuText()));
menuPreScrollTimer = new QTimer(this);
connect(menuPreScrollTimer, SIGNAL(timeout()), this,
SLOT(beginScrollingMenuText()));
checkConnectionsTimer = new QTimer(this);
connect(checkConnectionsTimer, SIGNAL(timeout()), this,
SLOT(checkConnections()));
checkConnectionsTimer->start(10000);
recStatusTimer = new QTimer(this);
connect(recStatusTimer, SIGNAL(timeout()), this, SLOT(outputRecStatus()));
scrollListTimer = new QTimer(this);
connect(scrollListTimer, SIGNAL(timeout()), this, SLOT(scrollList()));
showMessageTimer = new QTimer(this);
showMessageTimer->setSingleShot(true);
connect(showMessageTimer, SIGNAL(timeout()), this,
SLOT(removeStartupMessage()));
updateRecInfoTimer = new QTimer(this);
updateRecInfoTimer->setSingleShot(true);
connect(updateRecInfoTimer, SIGNAL(timeout()), this,
SLOT(updateRecordingList()));
gCoreContext->addListener(this);
isRecording = false;
}
bool LCDProcClient::SetupLCD ()
{
QString lcd_host;
int lcd_port;
lcd_host = gCoreContext->GetSetting("LCDHost", "localhost");
lcd_port = gCoreContext->GetNumSetting("LCDPort", 13666);
if (lcd_host.length() > 0 && lcd_port > 1024)
connectToHost(lcd_host, lcd_port);
return connected;
}
bool LCDProcClient::connectToHost(const QString &lhostname, unsigned int lport)
{
// Open communications
// Store the hostname and port in case we need to reconnect.
int timeout = 1000;
hostname = lhostname;
port = lport;
// Don't even try to connect if we're currently disabled.
if (!gCoreContext->GetNumSetting("LCDEnable", 0))
{
connected = false;
return connected;
}
if (!connected)
{
QTextStream os(socket);
socket->connectToHost(hostname, port);
while (--timeout && socket->state() != QAbstractSocket::ConnectedState)
{
qApp->processEvents();
usleep(1000);
if (socket->state() == QAbstractSocket::ConnectedState)
{
connected = true;
os << "hello\n";
break;
}
}
}
return connected;
}
void LCDProcClient::sendToServer(const QString &someText)
{
// Check the socket, make sure the connection is still up
if (socket->state() != QAbstractSocket::ConnectedState)
{
if (!lcd_ready)
return;
lcd_ready = false;
//Stop everything
stopAll();
// Ack, connection to server has been severed try to re-establish the
// connection
VERBOSE(VB_IMPORTANT, "LCDProcClient: Connection to LCDd died unexpectedly.");
return;
}
QTextStream os(socket);
os.setCodec("ISO 8859-1");
last_command = someText;
if (connected)
{
if (debug_level > 9)
VERBOSE(VB_NETWORK, "LCDProcClient: Sending to Server: " << someText);
// Just stream the text out the socket
os << someText << "\n";
}
else
{
// Buffer this up in the hope that the connection will open soon
send_buffer += someText;
send_buffer += "\n";
}
}
void LCDProcClient::setPriority(const QString &screen, PRIORITY priority)
{
QString aString;
int err = 0;
aString = "screen_set ";
aString += screen;
aString += " priority ";
switch (priority) {
case TOP:
aString += prioTop;
break;
case URGENT:
aString += prioUrgent;
break;
case HIGH:
aString += prioHigh;
break;
case MEDIUM:
aString += prioMedium;
break;
case LOW:
aString += prioLow;
break;
case OFF:
aString += prioOff;
break;
default:
err = 1;
break;
}
if (err == 0)
sendToServer (aString);
}
void LCDProcClient::setHeartbeat (const QString &screen, bool onoff)
{
QString msg;
if (onoff)
{
if (pVersion == LCD_VERSION_4)
{
msg = "widget_add " + screen + " heartbeat";
}
if (pVersion == LCD_VERSION_5)
{
msg = "screen_set " + screen + " heartbeat on";
}
}
else
{
if (pVersion == LCD_VERSION_4)
{
msg = "widget_del " + screen + " heartbeat";
}
if (pVersion == LCD_VERSION_5)
{
msg = "screen_set " + screen + " heartbeat off";
}
}
sendToServer (msg);
}
void LCDProcClient::checkConnections()
{
if (debug_level > 0)
VERBOSE(VB_GENERAL, "LCDProcClient: checking connections");
// check connection to mythbackend
if (!gCoreContext->IsConnectedToMaster())
{
if (debug_level > 0)
VERBOSE(VB_GENERAL, "LCDProcClient: connecting to master server");
if (!gCoreContext->ConnectToMasterServer(false))
VERBOSE(VB_IMPORTANT, "LCDProcClient: connecting to master server "
"failed");
}
//check connection to LCDProc server
if (socket->state() != QAbstractSocket::ConnectedState)
{
if (debug_level > 0)
VERBOSE(VB_GENERAL, "LCDProcClient: connecting to LCDProc server");
lcd_ready = false;
connected = false;
// Retry to connect. . . Maybe the user restarted LCDd?
connectToHost(hostname, port);
}
}
void LCDProcClient::serverSendingData()
{
QString lineFromServer, tempString;
QStringList aList;
QStringList::Iterator it;
// This gets activated automatically by the QSocket class whenever
// there's something to read.
//
// We currently spend most of our time (except for the first line sent
// back) ignoring it.
//
// Note that if anyone has an LCDproc type lcd with buttons on it, this is
// where we would want to catch button presses and make the rest of
// mythTV/mythMusic do something (change tracks, channels, etc.)
while(socket->canReadLine())
{
lineFromServer = socket->readLine();
lineFromServer = lineFromServer.replace( QRegExp("\n"), "" );
lineFromServer = lineFromServer.replace( QRegExp("\r"), "" );
if (debug_level > 0)
// Make debugging be less noisy
if (lineFromServer != "success")
VERBOSE(VB_NETWORK, "LCDProcClient: Received from server: "
<< lineFromServer);
aList = lineFromServer.split(" ");
if (aList.first() == "connect")
{
// We got a connect, which is a response to "hello"
//
// Need to parse out some data according the LCDproc client/server
// spec (which is poorly documented)
it = aList.begin();
it++;
if ((*it) != "LCDproc")
{
VERBOSE(VB_IMPORTANT, "LCDProcClient: WARNING: Second parameter "
"returned from LCDd was not \"LCDproc\"");
}
// Skip through some stuff
it++; // server version
QString server_version = *it;
it++; // the string "protocol"
it++; // protocol version
QString protocol_version = *it;
setVersion (server_version, protocol_version);
it++; // the string "lcd"
it++; // the string "wid";
it++; // Ah, the LCD width
tempString = *it;
setWidth(tempString.toInt());
it++; // the string "hgt"
it++; // the LCD height
tempString = *it;
setHeight(tempString.toInt());
it++; // the string "cellwid"
it++; // Cell width in pixels;
tempString = *it;
setCellWidth(tempString.toInt());
it++; // the string "cellhgt"
it++; // Cell height in pixels;
tempString = *it;
setCellHeight(tempString.toInt());
init();
describeServer();
}
if (aList.first() == "huh?")
{
VERBOSE(VB_IMPORTANT, "LCDProcClient: WARNING: Something is getting"
"passed to LCDd that it doesn't understand");
VERBOSE(VB_IMPORTANT, "last command: " << last_command);
}
else if (aList.first() == "key")
{
if (m_parent)
m_parent->sendKeyPress(aList.last().trimmed());
}
}
}
void LCDProcClient::init()
{
QString aString;
lcd_keystring = "";
connected = TRUE;
// This gets called when we receive the "connect" string from the server
// indicating that "hello" was succesful
sendToServer("client_set name Myth");
// Create all the screens and widgets (when we change activity in the myth
// program, we just swap the priorities of the screens to show only the
// "current one")
sendToServer("screen_add Time");
setPriority("Time", MEDIUM);
if (gCoreContext->GetSetting("LCDBigClock", "1") == "1")
{
// Big Clock - spans multiple lines
sendToServer("widget_add Time d0 num");
sendToServer("widget_add Time d1 num");
sendToServer("widget_add Time sep num");
sendToServer("widget_add Time d2 num");
sendToServer("widget_add Time d3 num");
sendToServer("widget_add Time ampm string");
sendToServer("widget_add Time dot string");
}
else
{
sendToServer("widget_add Time timeWidget string");
sendToServer("widget_add Time topWidget string");
}
// The Menu Screen
// I'm not sure how to do multi-line widgets with lcdproc so we're going
// the ghetto way
sendToServer("screen_add Menu");
setPriority("Menu", LOW);
sendToServer("widget_add Menu topWidget string");
for (unsigned int i = 1; i <= lcdHeight; i++)
{
aString = "widget_add Menu menuWidget";
aString += QString::number (i);
aString += " string";
sendToServer(aString);
}
// The Music Screen
sendToServer("screen_add Music");
setPriority("Music", LOW);
sendToServer("widget_add Music topWidget1 string");
sendToServer("widget_add Music topWidget2 string");
sendToServer("widget_add Music timeWidget string");
sendToServer("widget_add Music infoWidget string");
sendToServer("widget_add Music progressBar hbar");
// The Channel Screen
sendToServer("screen_add Channel");
setPriority("Channel", LOW);
sendToServer("widget_add Channel topWidget string");
sendToServer("widget_add Channel botWidget string");
sendToServer("widget_add Channel timeWidget string");
sendToServer("widget_add Channel progressBar hbar");
// The Generic Screen
sendToServer("screen_add Generic");
setPriority("Generic", LOW);
sendToServer("widget_add Generic textWidget1 string");
sendToServer("widget_add Generic textWidget2 string");
sendToServer("widget_add Generic textWidget3 string");
sendToServer("widget_add Generic textWidget4 string");
sendToServer("widget_add Generic progressBar hbar");
// The Volume Screen
sendToServer("screen_add Volume");
setPriority("Volume", LOW);
sendToServer("widget_add Volume topWidget string");
sendToServer("widget_add Volume botWidget string");
sendToServer("widget_add Volume progressBar hbar");
// The Recording Status Screen
sendToServer("screen_add RecStatus");
setPriority("RecStatus", LOW);
sendToServer("widget_add RecStatus textWidget1 string");
sendToServer("widget_add RecStatus textWidget2 string");
sendToServer("widget_add RecStatus textWidget3 string");
sendToServer("widget_add RecStatus progressBar hbar");
lcd_ready = true;
loadSettings();
// default to showing time
switchToTime();
updateRecordingList();
// do we need to show the startup message
if (!startup_message.isEmpty())
showStartupMessage();
// send buffer if there's anything in there
if (send_buffer.length() > 0)
{
sendToServer(send_buffer);
send_buffer = "";
}
}
QString LCDProcClient::expandString(const QString &aString)
{
if (pVersion != LCD_VERSION_5)
return aString;
QString bString;
// if version 5 then white space seperate the list of characters
for (int x = 0; x < aString.length(); x++)
{
bString += aString.at(x) + QString(" ");
}
return bString;
}
void LCDProcClient::loadSettings()
{
if (!lcd_ready)
return;
QString aString;
QString old_keystring = lcd_keystring;
timeformat = gCoreContext->GetSetting("LCDTimeFormat", "");
if (timeformat.isEmpty())
timeformat = gCoreContext->GetSetting("TimeFormat", "h:mm AP");
dateformat = gCoreContext->GetSetting("DateFormat", "dd.MM.yyyy");
// Get LCD settings
lcd_showmusic=(gCoreContext->GetSetting("LCDShowMusic", "1")=="1");
lcd_showmusic_items=(gCoreContext->GetSetting("LCDShowMusicItems", "ArtistAlbumTitle"));
lcd_showtime=(gCoreContext->GetSetting("LCDShowTime", "1")=="1");
lcd_showchannel=(gCoreContext->GetSetting("LCDShowChannel", "1")=="1");
lcd_showgeneric=(gCoreContext->GetSetting("LCDShowGeneric", "1")=="1");
lcd_showvolume=(gCoreContext->GetSetting("LCDShowVolume", "1")=="1");
lcd_showmenu=(gCoreContext->GetSetting("LCDShowMenu", "1")=="1");
lcd_showrecstatus=(gCoreContext->GetSetting("LCDShowRecStatus", "1")=="1");
lcd_backlighton=(gCoreContext->GetSetting("LCDBacklightOn", "1")=="1");
lcd_heartbeaton=(gCoreContext->GetSetting("LCDHeartBeatOn", "1")=="1");
aString = gCoreContext->GetSetting("LCDPopupTime", "5");
lcd_popuptime = aString.toInt() * 1000;
lcd_bigclock = (gCoreContext->GetSetting("LCDBigClock", "1")=="1");
lcd_keystring = gCoreContext->GetSetting("LCDKeyString", "ABCDEF");
if (!old_keystring.isEmpty())
{
aString = "client_del_key " + expandString(old_keystring);
sendToServer(aString);
}
aString = "client_add_key " + expandString(lcd_keystring);
sendToServer(aString);
setHeartbeat ("Time", lcd_heartbeaton);
if (lcd_backlighton)
sendToServer("screen_set Time backlight on");
else
sendToServer("screen_set Time backlight off");
setHeartbeat ("Menu", lcd_heartbeaton);
sendToServer("screen_set Menu backlight on");
setHeartbeat ("Music", lcd_heartbeaton);
sendToServer("screen_set Music backlight on");
setHeartbeat ("Channel", lcd_heartbeaton);
sendToServer("screen_set Channel backlight on");
setHeartbeat ("Generic", lcd_heartbeaton);
sendToServer("screen_set Generic backlight on");
setHeartbeat ("Volume", lcd_heartbeaton);
sendToServer("screen_set Volume backlight on");
setHeartbeat ("RecStatus", lcd_heartbeaton);
sendToServer("screen_set RecStatus backlight on");
}
void LCDProcClient::showStartupMessage(void)
{
QList<LCDTextItem> textItems;
QStringList list = formatScrollerText(startup_message);
int startrow = 1;
if (list.count() < (int)lcdHeight)
startrow = ((lcdHeight - list.count()) / 2) + 1;
for (int x = 0; x < list.count(); x++)
{
if (x == (int)lcdHeight)
break;
textItems.append(LCDTextItem(x + startrow, ALIGN_LEFT, list[x],
"Generic", false));
}
switchToGeneric(&textItems);
showMessageTimer->start(startup_showtime * 1000);
}
void LCDProcClient::removeStartupMessage(void)
{
switchToTime();
}
void LCDProcClient::setStartupMessage(QString msg, uint messagetime)
{
startup_message = msg;
startup_showtime = messagetime;
}
void LCDProcClient::setWidth(unsigned int x)
{
if (x < 1 || x > 80)
return;
else
lcdWidth = x;
}
void LCDProcClient::setHeight(unsigned int x)
{
if (x < 1 || x > 80)
return;
else
lcdHeight = x;
}
void LCDProcClient::setCellWidth(unsigned int x)
{
if (x < 1 || x > 16)
return;
else
cellWidth = x;
}
void LCDProcClient::setCellHeight(unsigned int x)
{
if (x < 1 || x > 16)
return;
else
cellHeight = x;
}
void LCDProcClient::setVersion(const QString &sversion, const QString &pversion)
{
protocolVersion = pversion;
serverVersion = sversion;
// the pVersion number is used internally to designate which protocol
// version LCDd is using:
if (serverVersion.startsWith ("CVS-current") ||
serverVersion.startsWith ("0.5"))
{
// Latest CVS versions of LCDd has priorities switched
pVersion = LCD_VERSION_5;
prioTop = "input";
prioUrgent = "alert";
prioHigh = "foreground";
prioMedium = "info";
prioLow = "background";
prioOff = "hidden";
}
else
{
pVersion = LCD_VERSION_4;
prioTop = "64";
prioUrgent = "128";
prioHigh = "240";
prioMedium = "248";
prioLow = "252";
prioOff = "255";
}
}
void LCDProcClient::describeServer()
{
if (debug_level > 0)
{
VERBOSE(VB_GENERAL,
QString("LCDProcClient: The server is %1x%2 with each cell being %3x%4." )
.arg(lcdWidth).arg(lcdHeight).arg(cellWidth).arg(cellHeight));
VERBOSE(VB_GENERAL,
QString("LCDProcClient: LCDd version %1, protocol version %2.")
.arg(serverVersion).arg(protocolVersion));
}
if (debug_level > 1)
{
VERBOSE(VB_GENERAL, QString("LCDProcClient: MythTV LCD settings:"));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showmusic : %1")
.arg(lcd_showmusic));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showmusicitems : %1")
.arg(lcd_showmusic_items));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showtime : %1")
.arg(lcd_showtime));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showchannel : %1")
.arg(lcd_showchannel));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showrecstatus : %1")
.arg(lcd_showrecstatus));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showgeneric : %1")
.arg(lcd_showgeneric));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showvolume : %1")
.arg(lcd_showvolume));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - showmenu : %1")
.arg(lcd_showmenu));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - backlighton : %1")
.arg(lcd_backlighton));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - heartbeaton : %1")
.arg(lcd_heartbeaton));
VERBOSE(VB_GENERAL, QString("LCDProcClient: - popuptime : %1")
.arg(lcd_popuptime));
}
}
void LCDProcClient::veryBadThings(QAbstractSocket::SocketError error)
{
// Deal with failures to connect and inabilities to communicate
VERBOSE(VB_IMPORTANT, QString("Could not connect to LCDd: %1")
.arg(socket->errorString()));
socket->close();
}
void LCDProcClient::scrollList()
{
if (scrollListItems.count() == 0)
return;
if (activeScreen != scrollListScreen)
return;
outputLeftText(scrollListScreen, scrollListItems[scrollListItem],
scrollListWidget, scrollListRow);
scrollListItem++;
if ((int)scrollListItem >= scrollListItems.count())
scrollListItem = 0;
}
void LCDProcClient::stopAll()
{
// The usual reason things would get this far and then lcd_ready being
// false is the connection died and we're trying to re-establish the
// connection
if (debug_level > 1)
VERBOSE(VB_GENERAL, "LCDProcClient: stopAll");
if (lcd_ready)
{
setPriority("Time", OFF);
setPriority("Music", OFF);
setPriority("Channel", OFF);
setPriority("Generic", OFF);
setPriority("Volume", OFF);
setPriority("Menu", OFF);
setPriority("RecStatus", OFF);
}
timeTimer->stop();
preScrollWTimer->stop();
scrollWTimer->stop();
popMenuTimer->stop();
menuScrollTimer->stop();
menuPreScrollTimer->stop();
recStatusTimer->stop();
scrollListTimer->stop();
unPopMenu();
}
void LCDProcClient::startTime()
{
setPriority("Time", MEDIUM);
setPriority("RecStatus", LOW);
timeTimer->start(1000);
outputTime();
activeScreen = "Time";
isTimeVisible = true;
if (lcd_showrecstatus && isRecording)
recStatusTimer->start(LCD_TIME_TIME);
}
void LCDProcClient::outputText(QList<LCDTextItem> *textItems)
{
if (!lcd_ready)
return;
QList<LCDTextItem>::iterator it = textItems->begin();
LCDTextItem *curItem;
QString num;
unsigned int counter = 1;
// Do the definable scrolling in here.
// Use asignScrollingWidgets(curItem->getText(), "textWidget" + num);
// When scrolling is set, alignment has no effect
while (it != textItems->end() && counter < lcdHeight)
{
curItem = &(*it);
++it;
num.setNum(curItem->getRow());
if (curItem->getScroll())
assignScrollingWidgets(curItem->getText(), curItem->getScreen(),
"textWidget" + num, curItem->getRow());
else
{
switch (curItem->getAlignment())
{
case ALIGN_LEFT:
outputLeftText(curItem->getScreen(), curItem->getText(),
"textWidget" + num, curItem->getRow());
break;
case ALIGN_RIGHT:
outputRightText(curItem->getScreen(), curItem->getText(),
"textWidget" + num, curItem->getRow());
break;
case ALIGN_CENTERED:
outputCenteredText(curItem->getScreen(), curItem->getText(),
"textWidget" + num, curItem->getRow());
break;
default: break;
}
}
++counter;
}
}
void LCDProcClient::outputCenteredText(QString theScreen, QString theText, QString widget,
int row)
{
QString aString;
unsigned int x = 0;
x = (lcdWidth - theText.length()) / 2 + 1;
if (x > lcdWidth)
x = 1;
aString = "widget_set ";
aString += theScreen;
aString += " " + widget + " ";
aString += QString::number(x);
aString += " ";
aString += QString::number(row);
aString += " \"";
aString += theText.replace ('"', "\"");
aString += "\"";
sendToServer(aString);
}
void LCDProcClient::outputLeftText(QString theScreen, QString theText, QString widget,
int row)
{
QString aString;
aString = "widget_set ";
aString += theScreen;
aString += " " + widget + " 1 ";
aString += QString::number(row);
aString += " \"";
aString += theText.replace ('"', "\"");
aString += "\"";
sendToServer(aString);
}
void LCDProcClient::outputRightText(QString theScreen, QString theText, QString widget,
int row)
{
QString aString;
unsigned int x;
x = (int)(lcdWidth - theText.length()) + 1;
aString = "widget_set ";
aString += theScreen;
aString += " " + widget + " ";
aString += QString::number(x);
aString += " ";
aString += QString::number(row);
aString += " \"";
aString += theText.replace ('"', "\"");
aString += "\"";
sendToServer(aString);
}
void LCDProcClient::assignScrollingList(QStringList theList, QString theScreen,
QString theWidget, int theRow)
{
scrollListScreen = theScreen;
scrollListWidget = theWidget;
scrollListRow = theRow;
scrollListItems = theList;
scrollListItem = 0;
scrollList();
scrollListTimer->start(LCD_SCROLLLIST_TIME);
}
//
// Prepare for scrolling one or more text widgets on a single screen.
// Notes:
// - Before assigning the first text, call: lcdTextItems->clear();
// - After assigning the last text, call: formatScrollingWidgets()
// That's it ;-)
void LCDProcClient::assignScrollingWidgets(QString theText, QString theScreen,
QString theWidget, int theRow)
{
scrollScreen = theScreen;
// Alignment is not used...
lcdTextItems->append(LCDTextItem(theRow, ALIGN_LEFT, theText,
theScreen, true, theWidget));
}
void LCDProcClient::formatScrollingWidgets()
{
scrollWTimer->stop();
preScrollWTimer->stop();
if (lcdTextItems->isEmpty())
return; // Weird...
int max_len = 0;
QList<LCDTextItem>::iterator it = lcdTextItems->begin();
LCDTextItem *curItem;
// Get the length of the longest item to scroll
for(; it != lcdTextItems->end(); ++it)
{
curItem = &(*it);
if (curItem->getText().length() > max_len)
max_len = curItem->getText().length();
}
// Make all scrollable items the same lenght and do the initial output
it = lcdTextItems->begin();
while (it != lcdTextItems->end())
{
curItem = &(*it);
++it;
if (curItem->getText().length() > (int)lcdWidth)
{
QString temp, temp2;
temp = temp.fill(QChar(' '), max_len - curItem->getText().length());
temp2 = temp2.fill(QChar(' '), lcdWidth);
curItem->setText(temp2 + curItem->getText() + temp);
outputLeftText(scrollScreen,
curItem->getText().mid(lcdWidth, max_len),
curItem->getWidget(), curItem->getRow());
}
else
{
curItem->setScrollable(false);
outputCenteredText(scrollScreen, curItem->getText(),
curItem->getWidget(), curItem->getRow());
}
}
if (max_len <= (int)lcdWidth)
// We're done, no scrolling
return;
preScrollWTimer->start(2000);
}
void LCDProcClient::beginScrollingWidgets()
{
scrollPosition = lcdWidth;
preScrollWTimer->stop();
scrollWTimer->start(400);
}